X 
CONTENTS ,. 
IX. Southwestern Chihuahua—Description of 
One of the Richest Silver Regions of the 
World—Mineral Wealth of the Sierra 
Madres—The Batopilas District, . .311 
X. Southwestern Chihuahua—The Return by 
Another Trail—The Ca 5 jon of the 
Churches—Among the Cliff Dwellers, . 345 
